Optical apparatus, vehicle-mounted camera, and transportation apparatus

A vehicle-mounted camera comprising:

• a lens;
• a lens holding member configured to hold the lens;
• an imaging device configured to receive light that has passed through the lens at an imaging plane of the imaging device to convert the received light into an electrical signal;
• a device holder configured to hold the imaging device, and
• an information processing unit configured to process the electrical signal,
• the lens, the lens holding member, the imaging device, and the device holder being integrally formed in an optical apparatus,
• wherein the device holder holds a surface of the imaging device, the surface being different from the imaging plane of the imaging device and a surface opposite to the imaging plane,
• wherein the device holder includes, in order of proximity to the lens in an optical path direction along an optical axis of the lens, a first member containing a first material, and a second member containing a second material different from the first material,
• wherein a linear expansion coefficient of the first material is larger than a linear expansion coefficient of the second material,
• wherein the linear expansion coefficient of the first material is 14.0×10−6/° C. to 24.0×10−6/° C.,
• wherein the linear expansion coefficient of the second material is 9.9×10−6/° C. to 20.5×10−6/° C., and
• wherein a difference between the linear expansion coefficient of the first material and the linear expansion coefficient of the second material is 3.5×10−6/° C. or more.

A transportation apparatus comprising:

• a lens;
• a lens holding member configured to hold the lens;
• an imaging device configured to receive light that has passed through the lens at an imaging plane of the imaging device to convert the received light into an electrical signal;
• a device holder configured to hold the imaging device, and
• an information processing unit configured to process the electrical signal,
• the lens, the lens holding member, the imaging device, and the device holder being integrally formed in and optical apparatus,
• wherein the device holder holds a surface of the imaging device, the surface being different from the imaging plane of the imaging device and a surface opposite to the imaging plane,
• wherein the device holder includes, in order of proximity to the lens in an optical path direction along an optical axis of the lens, a first member containing a first material, and a second member containing a second material different from the first material,
• wherein a linear expansion coefficient of the first material is larger than a linear expansion coefficient of the second material,
• wherein the linear expansion coefficient of the first material is 14.0×10−6/° C. to 24.0×10−6/° C.,
• wherein the linear expansion coefficient of the second material is 9.9×10−6/° C. to 20.5×10−6/° C., and
• wherein a difference between the linear expansion coefficient of the first material and the linear expansion coefficient of the second material is 3.5×10−6/° C. or more.